This book of Professor Allan R. Brewer-Carias, is a recollection of all his contributions to the International Academy of Comparative Law, on matters of Comparative Public Law (Comparative Constitutional Law and Comparative Administrative Law), submitted between 1966 and 2022, as General Reports to the Congresses of the Academy held in Uppsala, August 1966 (Entreprises publiques); Pescara, August-September 1970 (Liberté d'information); Tehran, August-September 1974 (Regionalization in economic matters); Caracas, August-September 1982 (Territorial Political decentralization); in Montreal, August 1990 (Protections constituionelles contre les impositiones confiscatoires); Bristol, July-August 1998 (Constitutional implications of regional integration); and Washington, July 2010 (Constitutional Judges as Positive Legislators); as well as all the Venezuelan National Reports on the same matters sent to the Academy for its consideration by the respective General Reporters in the International Congresses of Uppsala 1966 (Limits to discretional power), Budapest 1978 (Public and private enterprises competition), Caracas 1982 (Centralized federation), Brisbane 2002 (Standing to Rise Constitutional Issues), Utrecht 2006 (Migration Law), Mexico 2008 (End of Federalism), Vienna 2014 (Social Rights As Fundamental Rights And Their Justiciability; The Government of Judges and Democracy) and La Asunción 2022 (Administrative Silence and the General Rules of Administrative Procedure).